CVE-2026-40169 PUBLISHED

ImageMagick: Heap buffer overflow (WRITE) in the YAML and JSON encoders

Assigner: GitHub_M
Reserved: 09.04.2026 Published: 13.04.2026 Updated: 14.04.2026

ImageMagick is free and open-source software used for editing and manipulating digital images. In versions below 7.1.2-19, a crafted image could result in an out of bounds heap write when writing a yaml or json output, resulting in a crash. This issue has been fixed in version 7.1.2-19.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS Score: 6.2

Attack Vector	Local	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	None
Privileges Required	None	Integrity Impact	None
User Interaction	None	Availability Impact	High

CVSS 3.1

Product Status

Vendor	ImageMagick
Product	ImageMagick
Versions	Version < 7.1.2-19 is affected

References

https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-5592-p365-24xh
https://github.com/ImageMagick/ImageMagick/commit/f86452a8aea37bf2b4bd36127f836dcc5f138b38
https://github.com/ImageMagick/ImageMagick/releases/tag/7.1.2-19
https://github.com/dlemstra/Magick.NET/releases/tag/14.12.0

Problem Types

CWE-122: Heap-based Buffer Overflow CWE
CWE-787: Out-of-bounds Write CWE